Asteroids

416801 2005GC120 help

Last update: 2025-07-15 00:51 UTC

Orbital Properties

Epoch

60800.0

MJD

Orbit type

Apollo

Perihelion (q)

0.600

Aphelion (Q)

1.787

Eccentricity (e)

0.497

Inclination (i)

16.5

deg

Orbit period (P)

476.3

Earth MOID

0.00568

U parameter

0.0

Next Earth close approach

Date

2040-11-28

Nominal distance (from Earth center)

0.01356

2028770

Maximum Brightness

12.2

mag

Risk

Object is not in risk list

Object is not in priority list

Physical Properties

Absolute Magnitude (H)

19.6

mag

Diameter

900

Taxonomic type

Rotation period (T)

Discovery Information

Discovery Date

2005-04-12

Observatory

Catalina Sky Survey

ORBIT VISUALISATION TOOLS

External links

Proper elements

Epoch

Near present day

Near middle of observation arc

Orbit properties

Epoch
Semimajor Axis
Eccentricity (e)
Inclination (i)
Long. of Ascending Node (Ω)
Arg. of Perihelion (ω)
Mean Anomaly (M)
Perihelion distance
Aphelion distance
Asc. Node-Earth Sep.
Desc. Node-Earth Sep.
MOID
Orbit Period
U parameter

Value

1-sigma variation

Unit

Epoch

Value

60800.0000

1-sigma variation

Unit

MJD

Semimajor Axis

Value

1.193507

1-sigma variation

2.140E-9

Unit

Eccentricity (e)

Value

0.497412

1-sigma variation

3.291E-8

Unit

Inclination (i)

Value

16.5376

1-sigma variation

5.255E-6

Unit

Long. of Ascending Node (Ω)

Value

67.9268

1-sigma variation

8.272E-6

Unit

Arg. of Perihelion (ω)

Value

258.3063

1-sigma variation

8.070E-6

Unit

Mean Anomaly (M)

Value

64.37030

1-sigma variation

0.00001

Unit

Perihelion distance

Value

0.599842

1-sigma variation

Unit

Aphelion distance

Value

1.787171

1-sigma variation

Unit

Asc. Node-Earth Sep.

Value

0.012393

1-sigma variation

Unit

Desc. Node-Earth Sep.

Value

-0.197343

1-sigma variation

Unit

MOID

Value

0.005676

1-sigma variation

Unit

Orbit Period

Value

476.2508

1-sigma variation

Unit

U parameter

Value

0.0

1-sigma variation

Unit

Covariance Matrix

	a	e	i	Ω	ω	M
a	4.58145E-18	-5.49086E-17	-2.69359E-16	-5.15957E-16	3.69429E-15	-1.65909E-14
e	-5.49086E-17	1.08326E-15	2.29805E-14	4.44266E-14	-6.73695E-14	1.66860E-13
i	-2.69359E-16	2.29805E-14	2.76171E-11	7.20437E-12	-5.58127E-12	-5.04304E-13
Ω	-5.15957E-16	4.44266E-14	7.20437E-12	6.84230E-11	-5.60811E-11	-6.05510E-12
ω	3.69429E-15	-6.73695E-14	-5.58127E-12	-5.60811E-11	6.51313E-11	-1.76109E-11
M	-1.65909E-14	1.66860E-13	-5.04304E-13	-6.05510E-12	-1.76109E-11	7.13404E-11

Date of computation: 2025-07-15 00:51 UTC

Note: The ASCII file is in a format suitable for Orbfit input.

Download ASCII file:

Physical properties

Rotation Period
Quality
Amplitude
Rotation Direction
Spinvector L
Spinvector B

Rotational properties

Value

Unit

Source

Rotation Period

Value

Unit

Source

[-]

Quality

Value

Unit

Source

[5]

Amplitude

Value

Unit

mag

Source

[-]

Rotation Direction

Value

Unit

Source

[-]

Spinvector L

Value

Unit

Source

[-]

Spinvector B

Value

Unit

Source

[-]

Taxonomy
Taxonomy (all)

Taxonomy

Value

Unit

Source

Taxonomy

Value

Unit

Source

[-]

Taxonomy (all)

Value

Unit

Source

[-]

Absolute Magnitude (H)
Slope Parameter (G)

H / G

Value

Unit

Source

Absolute Magnitude (H)

Value

19.566

Unit

mag

Source

[1]

Slope Parameter (G)

Value

0.15**

Unit

mag

Source

[1]

Albedo
Diameter

Size and albedo

Value

Unit

Source

Albedo

Value

0.031

Unit

Source

[2]

[3]

Diameter

Value

900

Unit

Source

[2]

Color Index Information

Color Index Information

Value

Unit

Source

Color Index Information

Value

Unit

mag

Source

[-]

Sightings

Sightings

Value

Unit

Source

Sightings

Value

Radar R

Unit

Source

[4]

Download this part as:

Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	EARN	1.) Mainzer, A.; Bauer, J.; Grav, T.; Masiero, J.; et al. (2014) Astrophys. J. 784, A110.
[3]	EARN	1.) Mainzer, A. et al. (2014) Astrophys. J. 784, 110. (The Population of Tiny Near-Earth Objects Observed by NEOWISE)
[4]	EARN	1.) href="http://echo.jpl.nasa.gov/asteroids/index.html">JPL's NEO Radar Detection Program Webpage
[5]	EARN	1.) Skiff, B.A. (2011) Posting on CALL web site. http://www.minorplanet.info/call.html

Observational Information

Arc Length
Unobserved
Normalized RMS of residuals

Arc Information

Value

Unit

Source

Arc Length

Value

6877

Unit

Source

[1]

Unobserved

Value

523

Unit

Source

[1]

Normalized RMS of residuals

Value

0.538956

Unit

Source

[1]

Astrometry Summary

First Observation
Last Observation
Total Optical Observations (Discarded)

Optical

Value

Unit

Source

First Observation

Value

2005-04-12.31682

Unit

Source

[2]

Last Observation

Value

2024-02-09.262162

Unit

Source

[2]

Total Optical Observations (Discarded)

Value

347 (6)

Unit

Source

[1]

Radar Summary

First Observation
Last Observation
Delay (Discarded)
Doppler (Discarded)
Total Optical Observations (Discarded)

Radar

Value

Unit

Source

First Observation

Value

2010-12-01

Unit

Source

[3]

Last Observation

Value

2010-12-01

Unit

Source

[3]

Delay (Discarded)

Value

0 (0)

Unit

Source

[-]

Doppler (Discarded)

Value

1 (0)

Unit

Source

[1]

Total Radar Observations (Discarded)

Value

1 (0)

Unit

Source

[1]

Note: The ASCII file is in a format suitable for Orbfit input.

Sources

No.	Name	Additional
[1]	ESA Aegis	ESA orbit determination and impact monitoring system
[2]	MPC	Minor Planet Center: https://www.minorplanetcenter.net
[3]	JPL Radar Observations	Jet Propulsion Laboratory: https://ssd.jpl.nasa.gov/dat/radar_data_ast.txt

Computation parameters

As seen from:

Initial Date: *

Final Date: *

Output option:

One line per time step

Time step:*

* - these fields are required

Close Approaches for 416801 2005GC120 from 1950 to 2125

Body	Date in UTC	Time uncert. in min	Nominal distance in au	Min. possible distance in au	Distance uncert. in au
EARTH	1954-11-27 03:59	< 1 min	0.0510620	0.0510610	0.0000003
EARTH	1967-12-01 01:10	< 1 min	0.0381106	0.0381100	0.0000002
EARTH	1979-05-05 15:48	< 1 min	0.1354763	0.1354756	0.0000002
EARTH	1992-05-16 14:03	< 1 min	0.1432234	0.1432227	0.0000002
EARTH	1997-11-23 10:09	< 1 s	0.1445124	0.1445119	0.0000002
EARTH	2010-12-01 05:17	< 1 s	0.0434342	0.0434340	0.0000001
EARTH	2022-05-09 18:05	< 1 s	0.1054503	0.1054502	0.0000001
EARTH	2040-11-28 13:41	< 1 min	0.0135615	0.0135603	0.0000004
EARTH	2053-12-01 23:26	< 1 min	0.0628562	0.0628436	0.0000042
EARTH	2065-05-03 18:39	< 1 min	0.1553552	0.1553455	0.0000032
EARTH	2066-12-07 10:44	< 1 min	0.1831314	0.1831187	0.0000042
EARTH	2078-05-09 16:32	< 1 min	0.1048257	0.1048244	0.0000005
EARTH	2091-05-17 12:24	< 1 min	0.1409379	0.1409355	0.0000008
EARTH	2096-11-21 22:18	< 1 s	0.1854063	0.1854058	0.0000002
VENUS	2097-12-12 02:31	< 1 s	0.0495488	0.0495486	0.0000000
EARTH	2109-11-27 01:31	< 1 min	0.0873066	0.0873003	0.0000021
EARTH	2122-11-30 18:10	< 1 min	0.0053508	0.0053426	0.0000027

Download as:

Stationary Points

Ecc. an. ast.	Ecc. an. Earth	Distance in au	Classification
69.86685205	325.23012119	0.00567626	MINIMUM
293.28890865	126.64274495	0.10445320	MINIMUM
1.27876659	227.00302253	0.46678459	SADDLE
181.28711704	43.90696888	0.88256492	SADDLE
359.24459028	43.25026254	1.57308759	SADDLE
178.71013400	222.35720329	2.77338040	MAXIMUM

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MOID Plots

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